WO2011131426A1

WO2011131426A1 - Air guidance system

Info

Publication number: WO2011131426A1
Application number: PCT/EP2011/053900
Authority: WO
Inventors: Reiner Hartmann; Stefan Schneider; Claudia Christine Ronzheimer
Original assignee: Rittal Gmbh & Co. Kg
Priority date: 2010-04-19
Filing date: 2011-03-15
Publication date: 2011-10-27
Also published as: US9357672B2; KR20130054268A; ES2549495T3; EP2561739A1; CN102934536B; US20130029581A1; DE102010016507A1; CN102934536A; EP2561739B1; KR101704099B1

Abstract

The invention relates to an air guidance system having an air guidance housing (30) and an air passage grating (10) fastened thereto, the air passage grating being held on the air guidance housing by means of a snap-lock connection. In order to simplify maintenance of such an air guidance system, the air guidance system carries at least one latch (35) having a snap-in shoulder (35.1) that can be engaged in a snap-lock seat (14.1) of the air passage grating. The air passage grating swivelably accommodates a handle (20) in a bearing seat, said handle disengaging the latch from the snap-lock seat when set from the locking position to the unlocking position.

Description

Air guide arrangement

The invention relates to an air guide arrangement with an air guide housing and an air passage grille attached thereto, wherein the air passage grating is held by means of a latching connection to the air guide housing.

Such air guide assemblies are used in Schaltschrankbau and can be used in a section of a control cabinet wall. Frequently combined with the air duct assemblies fan assemblies that suck in ambient air through the air passage grille, and deliver over the air duct housing in the cabinet interior.

In the air duct housing a filter mat is regularly held, which filters out particles from the sucked air. This filter mat must be replaced at regular intervals. For this purpose, the air passage grille is dismantled from the air duct housing. The air passage grille is by means of a latching connection to the air held housing. The locking connection is designed so that it can only be unlocked with a screwdriver.

It is an object of the invention to provide an air guide assembly of the type mentioned, in which the maintenance staff gets easy access to the interior of the air duct housing.

This object is achieved in that the air passage grille carries at least one latch with a locking projection which can be latched into a latching receptacle of the air passage grille, and that the air passage grille in a bearing receptacle receives a handle pivotally, which in its adjustment of the Arresting position in the Entriegeisteilung brings the bolt out of engagement with the locking receptacle.

During maintenance, therefore, no separate tool must be kept available for replacing the filter mat, but only the handle has to be pivoted in order to release the latching connection. In this way, a time-saving maintenance is possible even in confined spaces.

According to a preferred variant of the invention it can be provided that the handle carries two bearing lugs, which form a common bearing axis, and which are respectively engaged in a bearing receptacle. The common bearing axis forms a stable coupling of the handle to the air passage grille. The fact that the handle is locked in the air passage grille, he can easily connect with this in favor of a reduced installation costs.

A reliable lifting of the latching connection succeeds in a simple manner, if it is provided that the handle has at least one actuator which forms a ramp, which cooperates for unlocking the latching projection with an inclined surface of the latching projection such that the latching projection is deflected. At the Swiveling the handle slides the bevel on the inclined surface. As a result, a power reduction is achieved with the stable and stiff locking connections can be easily canceled.

A particularly stable coupling of the air passage grating can be obtained by arranging two latches on the air guide housing which can be unlocked by means of an associated actuator when the handle is actuated.

A particularly preferred air guide assembly is the form that the handle has a Abdrückstück which is spaced from the pivot axis of the handle, and that the Abdrückstück for pressing the air passage grating from the locking position to a Abdrückfläche the air guide housing is pressed.

In an operation of the handle so that on the one hand, the locking connection between the air passage grille and the air duct housing repealed. On the other hand pushes the handle with the press-off piece of the unlocked air passage grille from the air duct housing a little way, so that it can be easily gripped and opened further.

If it is provided that the handle has a stop which abuts in the unlocked position of the handle on a locking piece of the air passage grille, then the handle is still held securely on the air passage grille, if an operator pulls inadmissibly strong on the handle.

A particularly time-saving maintenance of the air guide assembly is possible if it is provided that the air-passage grating is coupled by means of a hinge connection pivotally mounted on the air guide housing. Then, first the locking connection can be canceled with the handle. Then lets the air passage grille in the hinge connection fold down, so that the interior of the air guide housing is accessible. The air passage grille must now, as it is still held in the hinge connection, not be set aside. The operating personnel can now change the filter mat and then fold the air passage grille in the hinge connection again until it reaches its mounting position. In this case, then locks the air-passage grille again in the area of the handle and it is thus set securely.

The invention will be explained in more detail below with reference to an embodiment shown in the drawings. Show it:

Figure 1 is a perspective front view of an air passage grating;

Figure 2 shows the representation of Figure 1, but in a modified

Mounting form;

Figures 3 to 6 a handle in different views; and

Figure 7 shows an air duct housing in a perspective front view.

FIG. 1 shows an air passage lattice 10 having a multiplicity of lamellae 1 1 which are parallel to one another. The slats 1 1 are closed at their longitudinal ends by means of webs 12 in one piece to each other. In the region of the lower horizontal edge, the air passage lattice 10 has two hinge receptacles 13, which are designed to form a horizontal hinge axis. At the upper horizontal edge of the air passage grating 10 is equipped with a closure receptacle 14. In this closure receptacle 14, a handle 20 is fixed. FIG. 2 shows the air passage lattice 10 according to FIG. 1, but with the handle 20 disassembled. As this illustration shows, the air passage lattice 10 is provided with an opening in the region of the closure receptacle 14. The breakthrough is bounded laterally by two parallel guide walls 14.3. In the guide walls 14.3 recesses are developed, which form a bearing receptacle 14.1. The bearing receivers 14.1 have an insertion section, in which a latching element 14.4 is integrated. Furthermore, each guide wall 14.3 has a latching receptacle 14.5. At the bottom of each bearing receptacle 14.1, a respective locking piece 14.2 is formed in the form of a web, wherein the locking pieces are 14.2 facing each other.

In the closure receptacle 14, the handle 20, which is detailed in FIGS. 3 to 6, can be mounted. As these illustrations show, the handle 20 is made in one piece as an injection molded part. It has a plate-shaped front cover 21, to which two mutually parallel side walls 22 are formed at right angles. The side walls 22 together with wall sections 27 form a receptacle in which electrical components can be fastened behind the front cover 21. For example, a battery or a switching device of a display unit can be integrated here.

From the side wall 22, two tab-shaped projections are exposed, the stops 26 form. The two stops 26 are connected to each other via a handle portion 24. In the area between the handle portion 24 and the two stops 26 a recessed grip 24.1 is formed.

On the side remote from the handle portion 24, the handle 20 has two actuators 25 arranged at a distance from one another. These actuators 25 are formed in the form of projections and each have an inclined run-on slope 25.1. This ramp 25.1 extends inclined to the median transverse plane M of the handle 20 (see Figure 5). In this case, the run-up slope falls 25.1 starting from the plane defined by the side wall 22 toward the front cover 21, as shown in FIG. For better clarification, in FIG. 5, the direction of inclination D at which the run-on slope 25.1 drops is marked on the left-side actuator 25. Each actuator 25 forms in the extension of the side wall 22 a Abdrückstück 25.2 in the form of a Abdrückschulter.

In the closure receptacle 14, the air passage grating 10 can be mounted. For this purpose, the handle 20 is inserted from the back of the air passage grating 10 forth with the front cover 21 in the front lock receptacle 14. The side walls 22 slide along the guide walls 14.3. When inserting the handle 20, the bearing lugs 23 reach the area of the locking elements 14.4. The locking elements 14.4 are deflected in opposite directions. When the bearing projections 23 have passed the locking elements 14.4 and reach the bearing receptacles 14.1, the locking elements 14.4 snap behind the bearing projections 23, so that the handle 20 is securely held on the air passage grating 10. Then form the bearing lugs 23 in the bearing receivers 14.1 a horizontal pivot axis about which the handle 20 is pivoted. The handle 20 can be pivoted, starting from the locking position shown in Figure 1, in an unlocked position. For this purpose, the recessed grip 24.1 provides a receptacle for the finger, with which the grip portion 24 can be engaged behind. Now, the handle 20 can be folded on the handle portion 24 about the pivot axis. The pivoting movement is thereby limited by the stops 26, wherein the lugs 26 abut against the locking pieces in the pivoted-out locking position.

The constructional unit formed from air passage grille 10 and handle 20 can be connected to the air guide housing according to FIG. The air guide housing 30 has a circumferential housing wall 31, which is closed with a bottom 33. The bottom 33 is penetrated by an air passage opening 32. The housing wall 31 is provided with an outwardly projecting, circumferential collar 36. In the region of the upper horizontal edge of the air guide housing 30 is a Bar arrangement with two bars 35 integrally formed. In this case, the bolt 35 are provided with spring elements 35.2, which are formed as formed on the collar 36 lobes. The spring elements 35.2 carry at their free ends locking lugs 35.1. At the lower horizontal edge of the air guide housing 30 has two hinge elements 34 are formed.

To connect the air passage grating 10 with the air guide housing 30, the hinge seats 13 of the air passage grating 10 are locked to the hinge elements 34. In this case, a hinge connection is then formed with a horizontal pivot axis about which the air passage grating 10 can be pivoted. In this case, the air passage grating 10 can be brought from an open maintenance position, in which the interior of the air guide housing 30 is accessible, in a folded-up mounting position. When folding up the air passage grating 10, the bolt 35 reach into the region of the closure receptacle 14 and engage in the locking receptacles 14.5. Thus, the air passage grille 10 is securely set. If it is to be opened again, so only the handle 20 has to be grasped and swung out on the grip section 24. The ramps 25.1 of the handle 20 slide on the inclined locking surfaces of the locking lugs 35.1. Then the latch 35 are deflected in the spring elements 35.2 and moved towards each other. They then come out of engagement with the locking receptacles 14.5. If the pivoting movement of the handle 20 continues, then the Abdrückstück 25.2 of the actuators 25 meets the front of the collar 36 of the air guide housing 30. This allows the air-passage grating 1 0 a piece far away from the air guide housing 30. The result is a gap at which the air passage grating 10 can be grasped and swung open.

Claims

claims

1 . Air duct arrangement with an air guide housing (30) and an air passage grille (10) attached thereto, wherein the air passage grille (10) is held on the air guide housing (30) by means of a latching connection, characterized

that the air passage grating (10) carries at least one latch (35) with a latching projection (35.1) which can be latched into a latching receptacle (14.5) of the air passage grille (10), and

in that the air passage grating (10) in a bearing receptacle (14.1) pivotally receives a handle (20) which, when it is adjusted from the arresting position into the unlocking graduation, brings the catch (35) out of engagement with the detent receptacle (14.5).

2. Air duct arrangement according to claim 1,

characterized,

that the handle (20) carries two bearing lugs (23) which form a common bearing axis and which are respectively engaged in a bearing receptacle (14.1).

3. Air duct arrangement according to claim 1 or 2,

characterized,

in that the handle (20) has at least one actuator (25) which forms a ramp (25.1) which cooperates with an oblique surface of the latching projection (35.1) for unlocking the latching projection (35.1) such that the latching projection (35.1) is deflected.

4. Air duct arrangement according to claim 3,

characterized,

in that two latches (35) are arranged on the air guide housing (30) and can be unlocked upon actuation of the handle (20) by means of a respective associated actuator (25).

5. Air duct arrangement according to one of claims 1 to 4,

characterized,

in that the handle (20) has an ejection piece (25.2) which is arranged at a distance from the pivot axis of the handle (20), and

in that the press-off piece (25.2) can be pressed from the locking position onto a push-off surface of the air guide housing (30) in order to press off the air passage grid (10).

6. Air duct arrangement according to one of claims 1 to 5,

characterized,

in that the handle (20) has a stop (26) which, in the unlocking position of the handle (20), abuts against a locking piece (14.2) of the air passage grating (10).

7. Air duct arrangement according to one of claims 1 to 6,

characterized,

in that the air passage grating (10) is pivotably coupled to the air guide housing (30) by means of a hinge connection.